s2smanager: Log error and fail gracefully if we can't open a socket for an outgoing s2s connection (thanks foucault)

1 files changed, 5 insertions, 0 deletions

diff --git a/core/s2smanager.lua b/core/s2smanager.lua
index a24f2b2d..98203a7d 100644
--- a/core/s2smanager.lua
+++ b/core/s2smanager.lua
@@ -308,6 +308,11 @@ function make_connect(host_session, connect_host, connect_port)
 	local from_host, to_host = host_session.from_host, host_session.to_host;
 	
 	local conn, handler = socket.tcp()
+	
+	if not conn then
+		log("warn", "Failed to create outgoing connection, system error: %s", handler);
+		return false, handler;
+	end
 
 	conn:settimeout(0);
 	local success, err = conn:connect(connect_host, connect_port);